Roberto, I. J., L. B. Brito, and R. W. Ávila. “A New Six-Pored Amphisbaena (Squamata: Amphisbaenidae) from the Coastal Zone of Northeast Brazil”. Zootaxa, vol. 3753, no. 2, Jan. 2013, pp. 167–176, doi:10.11646/zootaxa.3753.2.6.